Sullenberger Reservoir/Pagosa Lake/Lake Pagosa/Linn and Clark Reservoir
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View Surveys (2)
View Sources (2)
Grebe Survey Summary
- Max Adults: 38
- Year: 1998
- Most Recent Adults: presence
- Year: Some 5-years between 1998 and 2004
- Survey Type: Boat
- Most Common Threats Reported: Lack of nesting habitat
- Lake name:
- Sullenberger Reservoir/Pagosa Lake/Lake Pagosa/Linn and Clark Reservoir
- Location:
- Colorado
- Latitude:
- 37.279532
- Longitude:
- -107.0824998
- Surface area (km2):
- 0.4
- Basin type:
- reservoir
- Dam completion date:
- 1901 to 1905 created
- Management agency:
- Pagosa Lakes Property Owners Association; Pagosa Area Water and Sanitation District
- Lake use:
- untreated water storage recreation
- Comments:
- This lake stores untreated raw water and also serves as a recreation lake. Water does not fluctuate as much as other lakes in this complex. Referred to by various names but official is Lake Pagosa.
Surveys (2)
Survey Citation:
Beason, J., R. Levad, and T. Leukering. 2005. Monitoring Colorado’s Birds: The 2004 field season report. Rocky Mountain Bird Observatory unpub. report. __ pp. AND Leukering, Tony; Beason, Jason; Levad, Rich. 2004. Monitoring Colorado's birds: the 2003 field season report. In cooperation with Rocky Mountain Bird Observatory
-
Type
boat -
Time period
1998, 2004 -
Source
Report -
Both Western and Clarks?
N
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 101 to 500 | presumably >100 | Some 5-years between 1998 and 2004 |
| Most Recent Adults | 101 to 500 | presumably >100 | Some 5-years between 1998 and 2004 |
| Max Nests | 1 to 100 | 59 | Some 5-years between 1998 and 2004 |
| Most Recent Nests | 0 | 0 | 2003? 2004? |
| Max Chicks | N/A | N/A | N/A |
| Most Recent Chicks | N/A | N/A | N/A |
Comments:
Per authors, active nest count = # nests detected + 0.5*(juveniles detected). This reservoir considered the most productive for Western grebe nesting in CO due to 59 active nests in 5 years. The 5 year span between 1998 and 2004 was not named. Leukering report for 2003 says this site has been inactive for the last two years (assuming 2002 and 2003), possibly due to an improvement project that limited the emergent vegetation zone.
Survey Citation:
Giroir, G.P. and T. Leukering. 1999. Breeding distribution and numbers of Eared, Western, and Clark's grebes in Colorado. J. Colorado Field Ornithologists 33:83-90.
-
Type
shore -
Time period
23 May 1998, 28 July 1998 -
Source
Occasional Paper -
Both Western and Clarks?
N
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 1 to 100 | 38 | 1998 |
| Most Recent Adults | 1 to 100 | 38 | 1998 |
| Max Nests | 1 to 100 | 12 | 1998 |
| Most Recent Nests | 1 to 100 | 12 | 1998 |
| Max Chicks | N/A | N/A | N/A |
| Most Recent Chicks | N/A | N/A | N/A |
Comments:
One of 93 lakes, ponds, and reservoirs surveyed in CO for 3 species of grebes. One of the larger nesting colonies found in this study.